Machine for surfacing car floors and the like



June 9, 1925.

' w. N. OE HM ET AL MACHINE F95 sgnucms 04;; moons AND THE LIKE 2 Sheets-Sheet 1 lnl/ento 73 4 y gv "ACHINE FOR SURFACING CAR FLOORS QNDTHE LIKE 4 Filed Oct. 51, 1921 ,2 Sheets-Sheet 2 m/mwiw;

} Gomer Powell;

Patented June Q, 1925.

nm'rso STATES PATENTIOFFICE.

WILLIAM N. DE I-1M AND GOMEBT POWELL, OF 'MICHIGAN CITY, INDIANA. I

MACHINE FOR SUB-FACING CAR FLOORS AND THE LIKE.

Applicationfiled October 31, 1921. Serial No. 511,849.

To all whom it may concern: I

Be it known that we, VVITiLIAM N. OEI-IM and Goarnnr POWELL, citizens,respectively, ofthe United States and of the Kingdom of Holland, andresidents of MichiganCit-y, county of La Ports, and State of Indiana,have jointly invented certain new and'useful Improvements in Lia-chinesfor Surfacing Car Floors and the Like, of which the following is aspecification, and which are illustrated in the accompanying drawings,forming a .part thereof.

The invention relates to a nailing and surfacing machine adaptedespecially for driving floor boards into place, and at the same timefinishing the driving of the nail wherever such nail has not beenpreviously set by the nailing machines, hand hammer, or other tools. Thedevice is particularly designed for surfacing the floors of freight carswhere speed is essential.

,An object of the invention is to provide a mounting for such machine soas to enable the operator to quickly and easily roll the same over suchboards as are not completely driven into place. A further object is toprovide a set of special design for the hammer which will ride over theuneven floor easily and without catching on any boards (projecting abovethe surface.

Reference may be had to the accompanying drawings, in which- Fig. 1 is aside view of the nailing and surfacing machine;

Fig. 2 is a top plan view of the same;

Fig. 3 is a front view of the machine; and

Figs. 4 and 5 are detail views of the set designed for use with themachine, the set being shown in side elevation and in plan,respectively.

The machine comprises a pneumatic hammer designated generally by thereference numeral 10, and may be of any desired construction. The hammeris attached to some form of carriage, which in this case is illustratedas a three-wheel vehicle 11, the rear wheel 12 being pivoted in themanner of a caster so as to allow the carriage to be easily turned.

The hammer 10 may be provided with a set 13 of special design, shown indetail in Figs. at and 5. The stem 14 of the set fits loosely in thehammer socket 15, and its head rests upon the floor. The front and rearedges of this set 13 are shown as beveled slightly so as to ride overthe uneven floor" easily, without catching on any boards which may beprojecting above the surface. Thehammcr is reciprocated rapidly by meansof air pressure supplied thereto, as by a pipe 16, connected with anyconvenient source of pressure by the attachment of a flexible hose 1? atits inlet. The hammer delivers a succession of heavy blows upon the set,and in this manner the floor boards are driven completely down withoutbeing marred, as is the case when a sledge hammer is used according tothe present practice.

The throttle valve 18 for admitting air to the pneumatic hammer may beoperated by a bell-crank l9, fulcrumed at 20 upon a bracket 21, shown asapart of the frame of the carriage. erated' by pushing on handles 22 ofthe carriage, and manipulating an operating crank 23 with one hand. Thecrank 23 is attached to the bell-crank 19 by a connecting rod 2 1. Aslong as the valve 18 is open the air hammer reciprocates rapidly, and asthe machine is moved forward the blows are distributed over the severalboards which have been previously nailed adjacent to each other.

- It is obvious that a machine of this kind may have other uses thanthat described. It may also be used for smoothing surfaces other thanfloors, as, for example, in road making; or for roughening surfaces, byusing a chisel-like set in the hammer socket 15 instead of the formillustrated in Figs. 4 and 5. It is, in fact, adapted to all classes ofwork which require a machine tool delivering heavy blows in rapidsuccession over surfaces of considerable size.

We claim as our invention 1. A machine for surfacing floors and thelike, the combination of a carriage including a frame, longitudinalspaced wheels supporting the frame and one of them being swiveled toturn about a vertical axis, a pneumatic hammer mounted in fixed positionon the frame forwardly of the wheels and carrying a set in position tooperate on the floor to a level corresponding with the plane of thepoints supporting the wheels, an operating handle projecting rearwardlyfrom frame, and means operable from the handle for controlling thehammer.

2. A machine for surfacing floors or the like comprising, incombination, a pneumatic hammer, a beveled set therefor loosely Themachine may be opmounted in said hammer whereby the same is adapted toride over the surface of the floor, a carriage on Which said hammer ismounted, an operating handle for said carriage, and Valve-controllingmeans for said hammer operable from said handle.

8. A machine for surfacing floors or the like con'iprising incombination, a carriage, a pneumatic hammer mounted thereon, and a setloose in said hammer adapted to ride over the surface of the floor.

l. A machine for surfacing floors or the like comprising, incombination, a carriage, a pneumatic hammer mounted thereon, and abeveled set loosely mounted Within the hammer casing and adaptedto rideover the surface of the floor.

5. A surfacing machine comprising, in combination, a carriage, apneumatically operable reciprocating tool mounted thereon, a casing forsaid tool having a socket at its lower end, a set loosely fitted in saidsocket and adapted to deliver blows in rapid succession to the surfaceto be operated upon.

6. In a machine for surfacing floors and the like, the combination of acarriage including a frame, Wheels on which the frame is mounted, and ahandle by which the carriage is directed, a pneumatic hammer carried infixed positionby said frame and means accessible from the handle forcontrolling the hammer, said Wheels being arranged to support the hammerconstantly in position to reduce elevations to the level of the surfaceon which they rest.

7 7. In a machine for surfacing fioors'or the like, the combination of aframe, a pneumatic hammer carried by the frame, Wheels on which thehammer is mounted and arranged to support the hammer in a constantrelationship to the surface on which the wheels rest, and a beveled setloosely mounted with respect to the hammer and adapted to slide over thefloor.

8. In a machine for surfacing floors and the like, the combination of aportable support, a pneumatic hammer fixed in permanent position on saidsupport, and means for supporting said portable support at apredetermined distance from said. fioor whereby the said hammer may becarried in a definite relation to the surface to be treated.

WILLIAM N. OEHM. GOMERT POWELL.

